1 ; RUN: llc -march=hexagon -enable-pipeliner -stats -o /dev/null < %s 2>&1 -pipeliner-experimental-cg=true | FileCheck %s --check-prefix=STATS
4 ; We're unable to pipeline a loop with a subreg as an operand of a Phi.
6 ; STATS-NOT: 1 pipeliner - Number of loops software pipelined
8 ; Function Attrs: nounwind readnone
9 define void @f0(i32 %a0) #0 {
11 %v0 = sext i32 %a0 to i64
14 b1: ; preds = %b1, %b0
15 %v1 = phi i32 [ 805306368, %b0 ], [ %v12, %b1 ]
16 %v2 = phi i32 [ 5, %b0 ], [ %v13, %b1 ]
17 %v3 = sext i32 %v1 to i64
18 %v4 = mul nsw i64 %v3, %v0
19 %v5 = lshr i64 %v4, 32
20 %v6 = trunc i64 %v5 to i32
21 %v7 = sub nsw i32 536870912, %v6
22 %v8 = sext i32 %v7 to i64
23 %v9 = mul nsw i64 %v8, %v3
24 %v10 = lshr i64 %v9, 32
25 %v11 = shl nuw nsw i64 %v10, 4
26 %v12 = trunc i64 %v11 to i32
27 %v13 = add nsw i32 %v2, -1
28 %v14 = icmp eq i32 %v13, 0
29 br i1 %v14, label %b2, label %b1
35 attributes #0 = { nounwind readnone "target-cpu"="hexagonv55" }